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Finding the Third Proportional to 308,421 and 713,943

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Solution

The third proportional to 308,421 and 713,943 is: 1,652,658.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,421 : 713,943 = 713,943 : x
  2. Step 2: Convert to fraction form
    308,421/713,943 = 713,943/x
  3. Step 3: Cross multiply
    308,421x = 713,943 × 713,943
  4. Step 4: Simplify right side
    308,421x = 509,714,607,249
  5. Step 5: Solve for x
    x = 509,714,607,249/308,421
  6. Step 6: Final answer
    x = 1,652,658.56

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.